The United States Marine Corps recently announced plans to refurbish 23 F/A-18C Hornets from "the boneyard" at Davis-Monthan Air Force Base to address a shortage of usable airframes. Seven more will be transferred from the Navy's inventory to help address the shortage.

How short were the Flying Leathernecks? On average, a typical Marine squadron of 12 Hornets had only four operational planes. The shortage has had some serious effects on Marine Corps aviation, notably in deeply cutting training hours for pilots. Such a cut is bad news. A rusty pilot can make mistakes - mistakes that could result in a mishap that leaves the plane totaled, and a pilot killed or injured.

While some media reports paint this as a response to a very bad situation (and let's face facts, the state of Marine Corps aviation - and naval aviation overall, for that matter - could be a lot better than it is), the fact remains that this is a highly-public case of a major investment paying off. This is because the "boneyard" is not really a boneyard. In fact, it is, if you will, comparable to an NFL' team's practice squad.

An F/A-18E Super Hornet from the Tophatters of Strike Fighter Squadron (VFA) 14 participates in an air power demonstration over the aircraft carrier USS John C. Stennis (CVN 74).US Navy

Officially, the boneyard is called the 309th Aerospace Maintenance and Regeneration Group, or AMARG, formerly known as the Aerospace Maintenance and Regeneration Center (AMARC). In essence, it is a place where the United States military puts its extra aircraft for safekeeping. Davis-Monthan Air Force Base is very suited for this purpose. Located near Tucson, Arizona, the low humidity, and the fact that the soil doesn't contain a lot of acid makes it a good place for the long-term storage of aircraft. There are a lot of planes there currently - over 3,800 as of June 15 of this year.

To put it in terms of squadrons, this is a total of about seven bomber squadrons, eleven attack squadrons, 41 fighter squadrons, five airborne early warning squadrons, a dozen maritime patrol squadrons, and 14 squadrons of tankers. It's almost a whole `nother Air Force! And this is what the investment in AMARG buys. In a major war, it would take time to ramp up production of fighters, bombers, attack planes, transports, and other planes. AMARG's plane, while older than the ones on the front line, can still prove to be very valuable assets in buying time to get new planes built.

The B-52 with all its ammunition.
Tech Sgt. Robert Horstman/US Air Force

In the case of what the Marines are doing now, the 30 F/A-18Cs are doing just that. In essence, the Marines get two and a half more squadrons of their primary multi-role fighter to buy time for the F-35B to become operational. It is a stop-gap measure that, in essence, is being taken because the Marines made a pair of bad decisions in the past - to wit, putting all their eggs in the F-35B basket, and not buying into the F/A-18E/F Super Hornet as the Navy did.

This wasn't the first time that AMARG has helped the Marines. During the War on Terror, the Marines pulled heavy-lift helicopters from AMARG to meet needs in Iraq and Afghanistan, a classic example of the type of situation AMARG was intended to address. In the case of the F/A-18s being pulled out, this is more a case of mitigating the consequences for the Marine Corps decision to not buy into the Super Hornet and buying more time to get the F-35 operational. In essence, AMARG has bought time for the military to get new planes on-line. Again, it has fulfilled the measure of its creation.